Original title: Numerical modeling of magnetostrictive materials
Authors: Kholmetska, I. ; Chleboun, J. ; Krejčí, Pavel
Document type: Papers
Conference/Event: Engineering Mechanics 2016 /22./, Svratka (CZ), 2016-05-09 / 2016-05-12
Year: 2016
Language: eng
Abstract: An operator-differential model for magnetostrictive energy harvesting proposed in the literature is used to calculate the amount of harvested energy under some uncertainty in the Preisach density function. The uncertainty is modeled through a fuzzy set approach. In galfenol, an alloy of gallium and iron, however, the hysteresis phenomenon is present only weakly. This allows to propose a simpler, but computationally faster model without hysteresis. The new, simpler model has been identified from the measured magnetic and magnetostrictive cycles. The amount of harvested energy is of the same order in both models. Again, an uncertainty in the identified model can be considered and its impact on the amount of the harvested energy calculated.
Keywords: energy harvesting; hysteresis; magnetostrictive materials
Project no.: GA15-12227S (CEP)
Funding provider: GA ČR
Host item entry: Engineering Mechanics 2016, ISBN 978-80-87012-59-8, ISSN 1805-8248

Institution: Institute of Mathematics AS ČR (web)
Document availability information: Fulltext is available in the digital repository of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0261329

Permalink: http://www.nusl.cz/ntk/nusl-253838


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Research > Institutes ASCR > Institute of Mathematics
Conference materials > Papers